peterson



' Jan. 22,1931} warms APPARATUS Filed March 25, 1929 2 sheets-sheet 1 INVENTOR Burt ALPe/terson BY M M M ATT ORNEYS m T? A G Jam, 27, 1933.

Filed March 25. 1929 2 shets sheet 2 H KE i. I? 1 HNVENTOR Burfi A.Peie7som ATTORNEYS tatably su Patented 1931 UNITED STATES PATENT. oFFIcE j Boar A. 'mnnson, or nocxronn, rinnrors, ABSIGNOB 'ro' co1|: run, or nocn'oan, more, A conclus on or ILLDTQIB wmnre arrm'rus Application fled Iarch as, me.- Serial relates.

' This invention relates to creels for su porting supply yarn masses, as, for examp e,

' wa r creels, and more particularly to cree s in which the yarn masses are non-roported for the drawing of yarn off the en s of. theam masses. In creels of the last-mention type, it is necessary to provide means to prevent the yarn or thread from kinking when the warper stops, as theyarn unwinds so freel masses that kinks forlne at the time of stopfrom such yarn V ping willnot be straightened out when the warper-is again set in operation. Moreover, ,it is necessary to keep the yarn under tension while the warperis idle, in order to prevent tangling. warper to which yarn is supplied from crosswound conical yarn masses-non-rotatably mounted, there is a tension device adjacent to each cone which acts upon the thread at all times. This tension device is effective to in sure that. kinks shall be straightened out upon restarting of the warper, and to prevent tangling of theyarn while the warper is at rest, but inasmuch as the tension device acts at all times it limits the speed at which the warper may' be operated.

The object of the resent invention is to when needed, namely, while the warper is idle and while it is belng started, and which consequently places no tension upon the yarn .m-normal operation of vthe machine, and

therefore does notlimit the warping speed. M In the prior-art warper Just referred toit is impracticable to make the tension devices uniform in their action, hence they place a varying amount. of tension'upon the yarn' being warped. Since the tension devices of war ed. There is also less yarn breakage, as t e yarn is under very light tension.

In the accompanying drawings,

Figure l-is a fragmental side elevation of a creel provided with, tensioning devices embodying the features of'my invention, the creel being shown in operative relation to a warper.

n a certain prior-art provide a tension device which shall act only the creel herein disclosed do not act during the normal operation of the warper, there is: I uniformity of-tension of the yarn being 2 is a fragmental plan view of the cree Fig. 3 is a plan view of one of the tension devices and its operating mechanism.

Fig. 4 is a front elevation of the parts shown in Fig. 3, the-tension: device being illustrated in 1ts ineffective position.

Fig. 5 is a right-hand side elevation of said parts, the tension device being shown in its operative position.

Fig. 6 is a fragmental sectional view 01 the tension device-in its operative position.

The embodiment herein shown of the in vention comprises a warper A and a creel B. In the'present instance I have shown a beam warper, but it will be understood that the invention is applicable as well to a ball warper.

For a more detailed description of the warper herein illustrated, reference may be made to -the Melchor Patent No, 1,683,367, dated September 4, 1928.

-While thev creel B may partake of various forms, it is herein shown as comprising ,two

upright frames 1 and 2 which are ad acent each other at one end and separated from each other at the opposite end so as to constitute a V-shaped structure, the frames-1 I and 2 being rigidly connected together at their adjacent ends. So far as the may be .of any preferred construction, as, for

example, arms 2, such as those disclosed in. the De Wolf Patent No. 1,660,299, dated Febv I resent invention is concerned, the particular orm of ruary 21, 1928.. As' shown inFig. 2 herein,

the yarn masses are arrangedin pairs, and the pairs are arranged in tiers orcolumns.

In the present construction, the creel framesl and2 comprise vertical rods 3 on which are supportedthe devices for, guiding the yarn in its course'from' the-cheeses to the warperand for appl ing tension to the yarn upon the stoppage o the warper. Each rod 3 carries a vert cal series of yarnrguiding and tensioning means. The yarn-guiding.

and tension-ing means for each pair of yarn masses comprises 'a bracket 4 attached to the;

rod 3, said bracket carrying yarn guides 5' and 6. Intermediate the yarn guides 5 and 6 is a tension device comprising two hori-' movement in an opening 10 in the bracket 1V and a central opening 11 in the disk 7. Downward movement of the plunger is limited by engagement of the annular shoulder 12 on said plunger with the bracket 4. The.

upper portion of the plunger 9 is reduced in, diameter and extends slidably through a central opening 13 in the disk 8. The reductionin diameter of the plunger 9 provides an annular shoulder 14; which lies within the central recess 15 in the lower side of the disk 8.

hen the plunger 9 is in its lowermost position, as shown in Fig. 6, the disk 8 rests upon the disk 7 or'upon a thread extending from the guide 5 to the guide 6, the thread having arcuate contact with the plunger 9, as indicated in Fig. 3. In the present construction gravity is depended upon to move the plungers 9 and the tension disks 8 into their lower positions, but if desired, other means may be employed. It will be seen that upward movement of the plunger 9 will bring the shoulder14 into engagement with the end wall of the recess 15 and thus lift the disk 8, thereby freeing the thread from the pressure of said disk.

The means for raising each vertical series of plungers 9 comprises a vertical rod 16 guided at its ends for longitudinal movement. Fixed to the rod 16 are arms 17, one for each of the plungers 9. \Vhile ccaction between the plungers 9 and the arms 17 may be effect-- ed in various ways, I have herein shown each arm as underlying its respective plunger and as being normally a slight distance below it so that the annular shoulder 12 of the plunger may rest upon the bracket 4. The means for raising and lowering the rod 16 may be of any preferred construction, that herein shown comprising a rock shaft 18 journaled in the lower portion of the creel frame and having fixed thereto as many arms 19 as there are rods 16. The means herein disclosed for connecting each arm 19 to the adj acent rod 16 comprises a fork 20 on the end of the arm, said fork embracing the rod and having slots 21 to receive the ends of a pin 22 extending through the rod.

The two rock shafts 18 are herein shown as connected for simultaneous oscillation by means of a rock shaft 23 (Fig. 2) carrying gear elements 24: that mesh with corresponding gear elements 25 on the shafts 18. The shaft 23 is connected to the starting and stopping mechanism of the warper so as to cause the tension disks 8 to be lifted-into inoperative position when the warper is thrown into high speed and so as instantly to lower the The weight of the rods 16 and connected parts tends to lift the treadle 26 and shift the drive belt 29 onto the loose pulley. The means for holding the treadle down in the high-speed position shown in Fig. 1 is controlled by the detectors or drop wires 34, but has notbeen illustrated, as it may be of the ordinary or any preferred character.

In operation, when a thread breaks the trea dle is released, whereupon the weight of the rods 16 and connected partsv causes' the shaft '27 to turn in the direction to shift the drive ,belt 29 onto the loose pulley and to turn the shafts 18 in the direction to permit the tension disks 8 to drop into contact with the threads, the warper brake (not shown) being actuated at the same time to stop the warper promptly. The operator then draws forward to the warper the broken end attached to the supply yarn mass; The operator finds the thread end on the beam, to facilitate which the operator may set the beam in slow rotation by partially depressing thetreadle, as

described in said Melchor patent. The clearances between the arms 17 and the lower ends of the plungers 9 and the distance between the shoulders 14 on said plungers and the end wall of the recesses 15 are such that the warper may be placed in low speed without lifting the tension disks 8 into inoperative position. It will be seen that while the warper is standing idle and while it is being prepared for high-speed. operation, the tension devices act to keep the yarn from becomlng tangled. When the warper is being placed in high speed the tension disks 7 remain in tensioning position only long enough to straighten out any kinks there may be in the yarn.

It will be evident that since. the tension devices are in use only when needed, namely, while the warper is idle and while it is being started, there is less yarn breakage, consequently a much higher speed may be attained than has heretofore been practicable.

I claim as my invention:

1. The combination with a creel comprising a plurality of yarn mass supports, a correspondin plurality of individual yarn tensioning evices, and a vertically movable rod arranged to render said tensioning devices inoperative, of a warper having means for.

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tensioning devices into and out of operation.

2. The combination with a creel comprising a plurality of yarn mass supports and a corresponding plurality of individual yarn tensioning devices, of a warper having means for placing the warper in and out of operation, said means including a treadle, and connections between the treadle and the tension- -ing devices for throwing the latter into and out of operation.

3. In a creel, the combination of a plurality of yarn mass supports, a corresponding plurality of yarn tensioning devices, each of said devices comprising two horizontally disposed disks between which a thread may run, a plunger supported for vertical movement axially of said disks, said plunger being arranged to engage and lift the upper disk to render the tensioning device inoperative, a vertically movable rod having a plurality of arms, each arm underlying one of said plu'ngers, and means for raising and lowering said rod to throw the tensioning devices into and out of operation.

A. In a warping apparatus, the combination of a plurality of yarn mass supports, a corresponding plurality of yarn tensioning devices, each of said devices comprising two disks between which a thread may run, a warper', and means controlled by the warper for simultaneously separatin the disks of.

said t'ensioning devices to ren er said devices inoperative.

5. A yarn-guidin and tensioning device comprising a 'brac et' havin an opening therethrough, a plunger vertlcall movable in said opening and having a shou der to rest on the bracket, and two horizontally-disposed disks between which athread may run, said disks having central openings through which said plungerextends, the lower disk resting upon. said bracket, said plunger having a shoulder to engage and lift. the upper disk upon upward movement of the plun er, said upper disk being recessed to rovi e clearance between the last mentione shoulder and the upper disk.

In testimony whereof, I have hereunto affixed my signature.

BURT A. PETERSON. 

